[MacBookPro6,2, Cirrus Logic ID 4206, Speaker, Internal] No sound at all
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
alsa-driver (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
After upgrade to Natty, sound did not work.
Alsamixer set to 70% -> no sound
There used to be 4 speakers in the sound control of 10.10 now only 2 speakers appear. Maybe, front and back was mixed up?
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+
ProcVersionSign
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: HDA Generic [HDA Generic]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xc1d00000 irq 42'
Mixer name : 'Cirrus Logic ID 4206'
Components : 'HDA:10134206,
Controls : 5
Simple ctrls : 3
Card1.Amixer.info:
Card hw:1 'NVidia'/'HDA NVidia at 0xc1080000 irq 16'
Mixer name : 'Nvidia GPU 0a HDMI/DP'
Components : 'HDA:10de000a,
Controls : 16
Simple ctrls : 4
Date: Sun May 1 13:06:56 2011
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64+mac (20101008)
PackageArchitec
ProcEnviron:
LANGUAGE=en_GB:en
LANG=de_AT.UTF-8
LC_MESSAGES=
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_
Symptom_Card: Internal Audio - HDA Intel
Symptom_
Symptom_Jack: Speaker, Internal
Symptom_Type: No sound at all
Title: [MacBookPro6,2, Cirrus Logic ID 4206, Speaker, Internal] No sound at all
UpgradeStatus: Upgraded to natty on 2011-04-30 (1 days ago)
dmi.bios.date: 07/26/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP61.88Z.
dmi.board.
dmi.board.name: Mac-F22586C8
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookPro6,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAppleInc
dmi.product.name: MacBookPro6,2
dmi.product.
dmi.sys.vendor: Apple Inc.
Additional research:
alsamixer claims the card to be on irq 42, lshw claims the card to be on irg 41.
How can I fix this? And which one is correct?